On Wed, Nov 2, 2016 at 9:29 AM, Nathan Zimmer <nzimmer@xxxxxxx> wrote: > On Mon, Oct 31, 2016 at 08:55:49PM -0600, Peter Hurley wrote: >> On Mon, Oct 31, 2016 at 2:27 PM, Sean Young <sean@xxxxxxxx> wrote: >> > On Sun, Oct 30, 2016 at 10:33:02AM -0500, Nathan wrote: >> >> I think this should be PNP0501 instead of PNP0c02. >> >> Once I alter that then when I boot the serial comes up on irq 3. However it >> >> still hangs. >> >> I'll keep digging. >> > >> > Well that's that theory out of the window. I'm not sure where to look now, >> > I would start by enabling as many as possible of the "kernel hacking" config >> > options and see if anything gets caught. >> > >> > Looking at your earlier messages, you have a collection of percpu allocation >> > failures. That might be worth resolving before anything else. >> >> Hi Nathan, >> >> Couple of questions: >> 1. Was login over serial console setup and working on SLES 11? or was >> the 'console=ttyS1' only for debug output? >> I ask because console output doesn't use IRQs; iow, maybe the serial >> port w/ driver never actually worked. >> 2. Can you post dmesg for the SLES 11 setup? That would show if there >> were probe errors even on that. >> >> An alternative that should be equivalent to your previous setup is to >> build w/ CONFIG_SERIAL_8250_PNP=n >> Seems like your ACPI BIOS is buggy, but also that something else is using IRQ 3? >> >> Regards, >> Peter Hurley > > > > 1) Yes I can confirm I used it to login sometimes. > > I built with CONFIG_SERIAL_8250_PNP=n and that seemed to work better, in that the system did not hang. > However I couldn't login on the serial and got these error messages, I suspect I broke something while trying different permutations. > > gdm[5206]: WARNING: GdmDisplay: display lasted 0.136636 seconds > gdm[5206]: WARNING: GdmDisplay: display lasted 0.180955 seconds > gdm[5206]: WARNING: GdmDisplay: display lasted 0.161415 seconds > gdm[5206]: WARNING: GdmLocalDisplayFactory: maximum number of X display failures reached: check X server log for errors > > It did boot all the way though. > > 2) attached log So I'm confused where this leaves us. In your OP, you claim to have gotten it working with a partial revert of commit 835d844d1a28 (but you didn't attach the partial revert so no one knows what you did); however, my suggestion should have been equivalent. Note that you have the serial port disabled in BIOS; that's why you're getting the probe error for PNP. Regards, Peter Hurley -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
